I have the same issue, seems to be very erratic with its measurements. Frustrating as fitness tracking was one of the main reasons for getting one in the first

I have the same issue, seems to be very erratic with its measurements. Frustrating as fitness tracking was one of the main reasons for getting one in the first place. I would also like to be able to up the number of measurements it takes. I often only use about 50% battery a day so would happily utilise the remaining charge for more regular monitoring.